Abstract:
:Peak grip aperture has often been used to quantify the influence of illusions on judgments of size for action. However, a larger peak grip aperture need not mean that the object looks larger. It could also mean that it was grasped more carefully. These two possibilities can be distinguished on the basis of the velocity of grip closure just before contact. We let people grasp a bar that was placed on the shaft of a Müller-Lyer figure. The Müller-Lyer figure influenced the peak grip aperture. It did not influence the velocity of grip closure in the way that one would expect if size were mis-perceived. Thus there is no reason to assume that the perceived size guides the way that we reach and grasp an object.
journal_name
Exp Brain Resjournal_title
Experimental brain researchauthors
Biegstraaten M,de Grave DD,Brenner E,Smeets JBdoi
10.1007/s00221-006-0744-8subject
Has Abstractpub_date
2007-01-01 00:00:00pages
497-503issue
3eissn
0014-4819issn
1432-1106journal_volume
176pub_type
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